In another video, protestors can be heard shouting at the officer to lower his weapon. At least one other cop can be seen trying to deescalate the situation by placing his hand on the weapon to lower it.

The officer, who has not yet been identified, can be seen wearing a St. Ann Police Department badge. Phone calls to the department were not immediately returned.

On Twitter, the ACLU of Missouri claimed that the officer has been removed from duty.